Molding-machine



(No Model.) I 5Sheets-Sheet 1.

J. A. FIELD.

' MOLDING MACHINE.

No. 481,017. Patented Aug. 16, 1892.

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J. A. FIELD.

. MOLDING MACHINE. No. 481,017. Patented Aug. 16, 1892..

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(No Model.) 5 Sheets-Sheet 3;

J. A. FIELD.

MOLDING MACHINE.

No. 481,017. Patented Aug. 16, 1892.

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(No Model.) 5 Sheets-Sheet 4.

J. A. FIELD.

MOLDING MACHINE.

0. 41,017. Patented Aug. 16, 1892.

Witnesses.

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J. A. FIELD. MOLDING' MACHINE.

No. 481,017. Patented Aug. 16, 1892.

Witnesses. 4 Inventor.

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STATES JESSE A. FIELD, OF BUFFALO, NEW YORK.

MOLDING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 481,017, dated August16, 1892.

Application filed January 9, 1892. Serial No. 417A56- (N model.)

To all whom it may concern:

Be it known that I, JESSE A. FIELD, a citizen of the United States,residing in'Bulfalo, in the county of Erie and State of New York, haveinvented certain new and useful Improvementsin Molding-Machines, ofwhich the following is a specification.

My invention consists in certain improvements in molding-machines formaking iron or other castings, and will be fully and clearly hereinafterdescribed and claimed, reference being had to the accompanying drawings,in which Figure 1 is a plan view of the machine complete. Fig. 2 is adetached vertical longitudinal section through the wedge-shaped inclineswhich operate the combined peeningand feeding receptacle. Fig. 3 is aplan view of the mechanism below the sand-feeding mechanism and gearingfor operating it. Fig. 4 is a section in or about line a a, Fig. 10,cutting through a portion of the rotating platform and its supportingbed or platform, showing the mechanism for raising the flask and mold upfrom the pattern. Fig. 5 is a side elevation, partlyin section, showinga substantially central section through the rotating platform andthroughthe sand-feedinghoppers and thecombined peening and feedingreceptacle, and showing, also, the gearing for operating thesand-feeding, for rotating the table, and other mechanism. Fig. 6 is anenlarged side elevation of a portion of the sand-feeding mechanism. Fig.7 is a sectional elevation cutting through the rotating table in orabout line b b, Fig. 1, cutting, also, through the facing-receptacles,riddle, and feeding boxes. Fig.8 is a side elevation of the rotatingtable, showing an outside end view of the flask-covering roller and itsend-supporting bearing. Fig. 9 is also a side elevation of the rotatingtable, showing a section through the roller-shaft in or about line 0 c,Fig. 3. Fig. 10 is a plan view of the lower stationary supporting-bed.Fig. 11 is a detached side elevation of one of the rollers and its shaftfor lifting the sand feeding and peening mechanism. Fig. 12 is an edgeelevation of the same.

Referring to the drawings, the supportingbed 1 is preferably made round,substantially as shown; but it may be of any other suitable form. It issupported on a framework or posts 2, and below it is a railway-track 3,(shown in Figs. 3 and 5,) upon which is placed a small truck ofsufficient size to receive the molds and carry them off. '(See Fig. 5.)On the top of this table is secured in any Wellknown way a series ofrollers 4:, (see Fig. 10,) Where these rollers are shown on the lowerplatform. If desired, these rollers may be secured to the under side ofthe rotating platform, substantially as shown in Fig. 5; but I do notthink it would answer the purpose so well, as dirt and otherobstructions are liable to be deposited on the lower platform, overwhich the rollers run, which could not happen on the under side of therotating table or platform. To the-lower supporting-platform is rigidlysecured a vertical column 5 by means of a flanged base and bolts 5*,(see Fig. 5,) the rotating table 6 being first put on, as shown in saidFig. 5. The rotating table 6 is adapted to rotate on the column 5'and issup ported on the rollers4, above mentioned. Horizontally on therotating platform is rigidly secured a gear-wheel 7. (See Figs. 1, 3, 5,and 9, where this gear is shown.)

To the upper part of the column or shaft 5 is rigidly secured asupporting cross-head 8,

.having at its rear end two bearings 9,(shown in Fig. 5,) in which ismounted the drivingshaft 10, on the outer end of which is rigidlysecured a driving-pulley 11. (Shown in Figs. 1 and 5.) To the shaft 10is secured in any well-known Way a bevel-pinion 12, which gears in witha horizontal bevel-wheel 13. This wheel 13 is mounted on a verticalshaft 14, which shaft is set in a bearing 15 at the top, and its lowerend is supported in a bearing 16, which bearing is rigidly secured tothe vertical shaft by means of the arm 16, the shaft 5 passing throughits hub 17, and to which it is securely fastened in any wellknownmanner. At the foot of the vertical shaft let is a pinion 18, whichgears in with the horizontal gear-Wheel 7.

From the above construction it Will be seen that by turning thedriving-pulley 11 the motion will be communicated through the pinion 12to the bevel gear-wheel 13, and from that through the pinion 18, andthereby give the rotating platform its required rotary movement. On thisrotary table is secured a series of patterns, as seen in Figs. 1 and 3,

where I have shown a pattern of a radiatorsection; but any other patternwould answer just as well, and I have in this instance shown this rotarytable as provided with six sections A, B, O, D, E, and F, orplaces onwhich to secure a pattern; but any other number of such sections may beused, more or less, according to the size of the machine. These patternsare each secured in position on the table and are operated upon as theyrotate as follows, reference being bad to Figs. 1 and 3;

At the point A the pattern 18 is provided with a series of anchors 18 orsome device to support the core when put into the mold, which anchorsare taken from the pattern and carried off by the mold when it isremoved therefrom. This operation is performed at this point while theplatform is rotating slowly in the direction of the arrow V in said Fig.3. By the time the staples are put in place the pattern l8 has reachedthe point B, and another pattern is in its place ready to receivestaples. Here another attendant places over the pattern a flask 19.While this is being done the pattern reaches the point C and receives acoating of some suitable and well-known facing eitherby an attendant,whose duty is at this point for this purpose, or automatically, as willbe hereinafter explained. By the timeithas received its coating offacing ithas reached the point D, where it receives a supply of sand,which is supplied through the peenin g and sand-feeding receptacle, aswill be more clearly shown farther on. Just enough sand is dropped intothe flask to fill it sufficiently to make a proper mold. Shortly afterthis flask has received its charge of sand at the point E it passesunder the compressing-roller, when it is compressed around the patternand smoothed off at the top; but just before receiving this compressingand smoothing it is peened around the edge by the sand-receptacle andpeening device, as will be more clearly hereinafter Shown. the mold isgated and then automatically lifted from the pattern at the point F,from which it is removed and placed upon the truck.

The means for automatically facing the pattern consists of a riddle 20.(See Figs. 3 and 7). It is secured on an incline, substantially as shownin Fig. 7, to an arm 21, (also shown in Fig. 7), and is rigidly fastenedto the collar 22, which is adapted to turn back and forth on thevertical shaft or column 5, moving at the same time, or with the sandfeeding and peening receptacle. This movement will be described whendescribing the action of the sand feeding and peening receptacle, as thesame mechanism operates both. Above the riddle 20 is a feeding-funnel23, (shown in Fig. 7,) made of light sheet iron or tin, through whichthe facing material is dropped onto the riddle. It is secured to the arm21, and consequentlypartakes of the same lateral movement. Above thefunnel 23 (see Fig. 7) is After passing the compressing-roller locatedthe mechanism for feeding a limited quantity of the facing material,which consists of an overhanging arm 24, (shown in Fig. 7,) projectingout radially from the cross head or arm 8, of which it forms a part. Onthe top of the overhanging arm 24 is a sliding box 25. (See Figs. 1 and7.) This box is provided with a projecting horizontal table 26, which isattached to or forms a part of the box 25 and moves with it back andforth. It receives its movements by means of an angular arm 27, which ispivoted to an arm 27, projecting from the overhanging arm 24. (See Fig.1.) To one end of the arm 27 is pivoted bya pin 28 a connecting-rod 29,having its opposite end pivoted to the sliding box 25 by a pin 29".(Shown in Fig. 1.) The other end of the angular arm 27 is made in theform of a fork 29 (Shown in dotted lines in Fig. 1.) The connecting-rod30, that moves the box for supplying sand to the sand receiving andpeening receptacle, is provided with a holding or projecting pin 31,(see Figs. 1, 5, and 7,) which pin projects up between the fork 29, sothat the reciprocating movement of the rod 80 (which will be fullydescribed farther on) imparts a reciprocating movement to the arm 27,and consequently to the facing feed-box 25. Above the table 26 is astationary hopper 26, (see Fig. 7,) containing the facing sand or otherequivalent facing material. It is rigidly secured to some part of thebuilding so as to be immovable, and thus allow the table 26 and thefeed-box 25 to slide back and forth under it. At one side of the bottomof this box 25 is a hinged door 32, (see Fig. 7,) which hangs downwardwhen open, and back of the door 32 is a friction-roller 33, secured to astationary pin 34:.

From the above construction it will be seen that as the sliding box 25is pushed outward in the direction of the arrow WV, Fig. 7, the doorwill be closed by the roller as it passes over it, and that when the box25 has passed outward to the limit of its movement the horizontal table26 will have passed away from under the mouth of the stationary hopper26, and thereby allow the facing material to flow out and fill thesliding box 25, and that a reverse or return movement will cause thesliding box to move into the position shown in Fig. 7 and permit thedoor 32 to open and drop the facing material into the funnel 23, throughwhich it falls into the inclined riddle, and is thus distributed overthe pattern.

The sand feeding and peening receptacle being bad to Figs. 3 and 5: Thereceptacle for receiving and allowing it to drop into the flask andcover the pattern consists of an open flaring receptacle 35. At thebottom it is made suficiently thick and of the required form,substantially as shown at 36 in Fig. 5, to peen or press the sand andcondense it sufficiently around the edges of the pattern within theflask. This sand-receptacle is made of some light materialwood orsheet-iron, for

receives its movement as follows, reference instance-and is secured toan arm 37 by bolts 38. (Shown in Fig. 5.) This arm 37 is piv-' oted byapin 39 to the collar 22, which collar is adapted to turn sidewise backand forth around the vertical shaft 5, and is kept in its place betweenthe two stationary collars 17 and 40, which are rigidly secured to theshaft 5 in any well-known way, either by a set-screw 41 or by a key 45.(Shown in Fig. 5.) The pivot 39 allows also a vertical swinging movementto be given to the sand-receptacle 35, so

movement by means of the vertical bolts 44. (Shown in Figs. 1, 3, 5, 11,and 12.) On the rotating table, as shown, there are six places on-whichpatterns are secured. Consequently there are six depressions 46 in theupwardly-projecting rim 47. (Shown in Figs. 1, 3, 5, 7, and 9.) In eachof these depressions 46 is a bolt 44, which projects vertically downthrough the rim 47 and rotating table 6, and

are each provided with a forked portion, between which is pivoted aroller or wheel 4. In the track of the rollers 4 are twoupwardlyprojecting inclined portions 48 and 48, the second one beinghigher than the first. I (See Figs. 2 and 5.) that as each roller 4passes over them the peening and sand receptacle will be raised anddropped at the exact time a flask is in the proper position to receivethe moldingsand and the peening ac1ion.

It will be noticed that one of the inclines 48 and 48 is higher than theother (the incline 48) and that an opening 82 is left between them. (SeeFig. 2.) The object of this construction is to cause the combined sandreceptacle and peening device to first raise up to allow the mold andflask to pass under it and then drop suddenly down to give the peeningaction and then raise up high enough to release the arm 37, so that therim 47 can pass under said arm and also to allow the flask when filledabove the top to pass under the peening device, which operation issuccessively repeated as the table 6 rotates.

While the peening and sand receptacle 35 is being thus dropped into theflask to press the sand down the motion of the rotating platform iscontinuous. Therefore the receptacle 35 must turn with it while therollers 4?-are passing up over the inclines 48 and 48 This is done asoften as the arm 37 drops down into one of the depressions, and as thevertical side 49 comes against the arm 37 it-is carried with therotating table until the bolt 44, which is immediately under it, liftsit up molding-sand from the hopper 52.

The sand-recepta- These inclines are located so above the side 49, whenaspring 50 (shown in Figs. 1 and 3) immediately draws it back to itsnormal position. This operation is performed as often as a flask passesunder the peening and sand-receiving receptacle.

On the upper part of the stationary vertical shaft or column 5 on thetop of the crosshead 8 is a sliding box 51 for receiving the (See Fig.5.) It is also provided with a horizontal table 53, which shuts off thelower end of the hopper 52 when the box 51 passes from under it. As thisbox 51, filled with sand, passes over the receptacle 35 it drops it intoit. This is done by means of two doors 54 54, which are hinged on pivots55, (see Fig. 6,) the doors 54' and 54 being shown therein by dottedlines. The pivots 55 are geared together by toothed gears 55" and 55 sothat both move at once the lower end of thearm 58 is a notch '61,

into which the end of the weighted arm catches and holds the doors 54and "54 closed, as shown in said Fig. 6. Now it will be seen that if thebox 51 when it is thus closed and loaded with sand is being pushedforward near the limit of its movement, the end at 61 of the arm 58 willcome against a stationary pin 62 and be thus movedoff from the end ofthe arm '56 and allow the heavy sand to openthe doors 54 and 54, so thatit drops into the The moment the doors 54 andreceptacle 35. 54 arereleased of their-weight of sand the weight 63 will again close them andbring all the parts into the position shown in-Fig. 6.

The box 51 receives its ro er reci rocatin P s motionsby means of aconnecting-rod'30,

which is pivoted to said box by a pin 64. (See Figs. 1 and to a disk 65.This disk receives a rotary movement by means of a gear-wheel 66, whichgears in with a pinion 67 at the upper part of the vertical shaft 14, asshown in said Fig. 5. The sand after being thus peened around the edgesof the pattern, as above described, then passes under the compressingand smoothing roller 68,'(shown in Figs. 1, 3,and 8,) when the top ofthe mold is leveled ofi smooth and compressed. The compressing andsmoothing roller 68 may be either of a conical shape, as shown in Fig.1, or with parallel sides,'as shown in. Fig. 3. It is mounted on a shaft69, set in horizontal bearings 70 and 71. (See Figs. 1, 3, 8, and 9.)The bearing 70 is secured to a stationary arm 72, which is rigidly fastened to or forms a part of the fixed collar 17. The bearing 71 for theouter end of the shaft 69 is secured to 'a-vertical arm-73 by bolts 74.(See Fig. 8.)

The opposite end of this connecting-rod 30 (see Figs. 1 and 5) ispivoted There isa 'U-shaped bend '75 back of the horizontal bearing 7 Oon thearm 7 2, within which is rigidly secured to the shaft 69 abevel-wheel 76. (Shown in Figs. 1 and 3.) Back of the wheel 76 is avertical hearing 77 on the arm 72, and projecting down from the arm 72is an arm 78. (Shown in Fig. 9.) To this arm 7 S is another verticalbearing 79, and in the bearings 77 and 79 is mounted a vertical shaft80, having at its upper end a bevel-pinion 81, which gears in with thebevelwheel 76, and at the lower end of the shaft 80 is rigidly secured apinion 18, (see Fig. 9,) which gears in with the large horizontalgearwheel 7 and from which it receives its rotary motion and istransmitted through the bevelpinion 81 and bevel-wheel 76 to thecompressing-roller, thereby giving it its proper rotary motion as theflask and sand pass under it. As soon as the mold and flask passes underthe compression-roller it is raised up from off the pattern, which issecured to the table 6 by means of the inclined portions 83, 83*, and84. (See Figs. 4 and 10.) The projecting inclined portions 83 and 83 arearranged upon the stationary bed 1 side by side and securely fastened inposition with sufficient space between them to allow the roller thatpasses up and over the incline St to pass between them, (see Fig. 10,)where a plan view of these inclined projecting pieces is shown. Theprojecting portion ea is made adjustable longitudinally (see Figs. 4.and 10) by means of a slot 85, which passes through the bed 1, and ascrew-bolt 86, by which it is tightened at any point to which it may beadjusted. The object of this adjustment is to provide for flasks ofdifferent sizes.

On each of the six divisions A, B, O, D, E, and F of the rotating tableare two holes, in each of which is fitted loosely a pin 87, having asmall roller 88, adapted to roll up and over the inclines 83 83 Beyondpairs of pins 87 is a slot 89 through each portion A, B, C, D, E, and Fof the rotating table. In this slot 89 is passed a sleeve 90, (see Fig.4,) having a flange 91 at the bottom, and at the top is a screw portionand a nut 92 by which the sleeve is adjusted to any point in the slotand secured. By this means an adjustment may be made to correspond withthe adjustment of the incline below it. In this sleeve is passed (so asto fit loosely) a pin 93, having pivoted at its lower end a roller 94.The inclines or projections 83, 83", and 84 are located on thestationary bed at the point F, so that every time a flask reaches thatpoint the mold is lifted up off from and above the pattern and supportedthere by the pins 87 and 93 for a moment until removed and placed on thetruck 95.

In Fig. 3 I have shown a flask in dotted lines and the tops of the pins87 and 93, showing substantially their position and about where theytouch the under side of the flask when they rise to lift up the mold.

If desired, the mechanism for feeding and peening the sand may bedispensed with, as

all that could be performed by hand by an operator stationed at thatpart of the machine. The machine would operate nearly as Well, but couldnot work so quickly. The facing material can also be put on by hand byan operator stationed at the proper point for doing it, in which casethe mechanism forcing apparatus-an ordinary centrifugalblower, forinstance.

It will be noticed from the above description and drawings that themovable table while the machine is in operation has acontinuously-rotating movement without any intermissions. Thisconstruction saves a large portion of the time required in the operationot the machine, as an intermittingly-moving machine should not movefaster during its movements than I continuously move the table onmymachine. Gonsequentlythe intermissions represent so much loss of time,which the above-described construction saves. A continuously-rotatingmovement is therefore an important advantage which does not existin amolding-machine having an intermittinglyrotating table.

I claim as my invention- 1. In a molding-machine, the combination, witha stationary supporting-table provided with a vertical central shaft, ofa movable table carrying the patterns mounted thereon and resting onfriction-rollers, so as to turn easily on the stationary table, acombined sand receptacle and peening device for guiding the sand intothe flask and peening it around the inner edges of the flask near thepattern as the rotating table brings it in the proper position,mechanism, substantially as above described, for giving it its peeningmovement, and a means consisting of a roller under which the flaskpasses for compressing the sand in the flask after the peening devicehas done its Work, substantially as described.

2. In a moldinganachine, the combination, withastationarytable providedwitha series of supporting-rollers, of a rotating table mounted 011 saidrollers, a series of patterns secured to said rotating table at asubstantially equal distance apart, a vertical shaft rigidly secured tothe stationary table and around which the movable table rotates, acombined sand and peening device, mechanism, substantially as abovedescribed,for giving it its intermittent swinging and up-and-downmovements for peening the sand around the edge of the pattern, a rollerfor smoothing down the sand after it has been fed into the mold, pinspassing down through the rotating table and provided with rollers attheirlower ends, inclined upward projections located on the stationarytable over which said rollers pass and lift the mold and flask up fromthe pattern, and mechanism, substantially as above described, for givingthe moving table its required rotating movements, as herein set forth.

3. In a molding-machine, the combination of a stationary table providedwith wheels, upon which is mounted a movable table, a vertical shaftrigidly secured to the stationary table, so as to pass up through thecenter of the rotating table, a riddle secured to an arm attached to acollar on the stationary shaft at an incline to receive the facingmaterial and sift it on the pattern when it comes around to that point,a combined sand receiving and peening device, mechanism, substantiallyas hereinbefore set forth, for giving the required peening movements, asmoothing-roller and gearing operated by a horizontal gear on therotating table for giving it its proper rotating movements as the moldspass under it, a means consisting of pins passing through the rotatingtable and having friction-rollers at their lower ends adapted to roll upthe inclines on the projections on the lower table for lifting the moldfrom the pattern, and gearing, substantially as described, for givingthe movable table its rotating movements.

4:- In a molding-machine, a stationary supporting-table provided withrollers 4 and stationary inclined projections 83 83*, in combinationwith an adjustable inclined projecting portion 84, and acontinuously-rotatin g table mounted on a central pivotal shaft so as torest on the stationary-table rollers and provided with pins mounted invertical bearings in said movable table, having friction-rollers attheir lower ends, so as to be moved easily by the inclined projectingportions, and a means, substantially as above described, for giving therotating platform a continuouslyrotating movement, whereby the flask ormold maybe lifted up from the pattern during the continuous rotation ofthe table, substantially as described. 0

5. In a molding-machine, the combination, with a stationarysupporting-table provided with a series of rollers and a verticalcentral shaft, of a movable table mounted thereon, a combined sandreceptacle and peening device secured to an arm 37, pivoted to a collaradapted to be moved laterally one way on the sta tionary vertical shaft,a spring for bringing it back to its normal position,anupwardlyprojecting rim on the rotating'table, provided with a seriesof depressions, each havlng a vertical pin fitted loosely therein andprovided with a friction-roller at the bottom, and inclined projectionson the lower stationary table for lifting said pins as they successlvelypass over them, whereby the peening device is lifted and dropped everytime a flask comes below it, substantially as described.

6. In a molding-machine, the combination, with the sliding box forfeeding sand, of two doors 54 54, pivoted at the bottom and geared sothat both move together, a weighted arm projecting out from the gear55*, a weighted holding and releasing arm pivoted to an arm connectedwith the sliding box, and a stationary pin 62 for releasing the arm andpivoted doors, for the purposes described.

JESSE A. FIELD.

lVitnesses:

ORRIN BRYANT, ARTHUR J SANGSTER.

